The document summarizes guidelines from the American Diabetes Association (ADA) regarding standards of medical care for diabetes in 2017. It discusses recommendations for classifying and diagnosing different types of diabetes, including prediabetes, type 1 diabetes, type 2 diabetes, and gestational diabetes. The ADA recommends screening for prediabetes and type 2 diabetes in asymptomatic adults starting at age 45 or earlier for those with risk factors. It also provides criteria for diagnosing diabetes based on hemoglobin A1C, fasting plasma glucose, and oral glucose tolerance tests.